These days conservation is all about efficiency: getting the same—or better—results from just a fraction of the energy.

如今，节能的关键是效率：如何仅用一小部分能源就能达到同样或更好的效果。

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It follows immediately from the conservation of mechanical energy.

它紧跟着，机械能，守恒定理而产生。

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"The US a year ago was still in denial on issues of energy conservation, " said Earl Blumenauer, a Congressman from Oregon and a champion of the environment.

俄勒冈和一位国会议员和环保拥护者Earl Blumenauer说：“美国一年前还对能源节约问题持拒绝态度。”

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To stop that from happening, we need to increase conservation, increase energy efficiency, increase the use of alternative and renewable fuels, increase our use of nuclear power, and increase drilling for oil and gas here at home.

CNN: Transcript of Gov. Jindal's GOP response to Obama speech

Less than one percent of Califonia's energy supply comes from the lower Snake River dams, conservation groups note.

CNN: Energy crisis affects Snake River dam proposal

Though Koomey can't specify to what extent the financial crisis and technological advancements are to blame, he insists, broadly speaking, that we're primarily seeing fallout from the economic slowdown -- a stay of execution, of sorts, for those of us rooting for energy conservation.

ENGADGET: Report: data centers accounted for just 1 to 1.5 percent of electricity use last year, Google claims less than 1 percent of that